idle_for type error when used within method

[venkivijay]

As per the documentation, when using idle_for utils, the type can be empty. But chaostoolkit expects the type to be either action or probe when used within method. Is this idle_for function not meant to be used within method?

Code (method in an experiment):

method:
  - type: ""
    name: idle-for
    provider:
      type: python
      module: chaosaddons.utils.idle
      func: idle_for
      arguments:
        duration: 300

Error:

[2022-10-18 12:40:41 INFO] Validating the experiment's syntax
[2022-10-18 12:40:41 ERROR] an activity must have a type